[parted-devel] [PATCH 2/2] libparted: gpt: verify header is outside usable area
Davidlohr Bueso
dave at gnu.org
Fri Sep 7 17:55:54 UTC 2012
The first usable logical block can be used by a GUID partition
entry, and therefore cannot be used by the header.
---
libparted/labels/gpt.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/libparted/labels/gpt.c b/libparted/labels/gpt.c
index 6dfaf3e..42e702d 100644
--- a/libparted/labels/gpt.c
+++ b/libparted/labels/gpt.c
@@ -652,6 +652,9 @@ _header_is_valid (PedDisk const *disk, GuidPartitionTableHeader_t *gpt,
PedSector first_usable = PED_LE64_TO_CPU (gpt->FirstUsableLBA);
PedSector last_usable = PED_LE64_TO_CPU (gpt->LastUsableLBA);
+ if (first_usable < my_lba && last_usable > my_lba)
+ return 0;
+
if (last_usable < first_usable)
return 0;
--
1.7.9.5
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